No agent or agency’s trademark search query is 100% accurate, because first of all, the Trademark Office needs time to review and collect materials. This constitutes a blank period. During the blank period, it is the time to search. That is to say, for example, someone applied for the "Dali" trademark the day before yesterday, and if you check it today, you can't find it, so your application will definitely be rejected. Because he is ahead of you. That's the truth. Also, if your trademark is similar, there are many examiners’ subjective will in this similar judgment. Some examiners will give you a pass, while others will not, so it is not 100% accurate.